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In lugnet.animation, Mike Thorn wrote:
> At 08:20 AM 10/6/2003, you wrote:
[snip]
>
> > If you'd like more possible angles, you canhook two of your pistons back
> > to back
> > in each corner of the platform.
>
> Except that I only have two more pistons. :)
Ah..., but you don't really need the back and the front controlled by pistons do
you?
I would think that keeping the front hinged and the back actuated would give you
what you want. With two pistons ganged together, you can achieve tilt down,
level and tilt up. Then you have four more pistons to do whatever you want.
[snip]
>
> > If you control the platform pistons using pistons instead of switches, you can
> > have a more analog situation. You can hook two pistons together. By
> > expanding
> > and contracting one piston, you can expand/contract the other piston.
>
> That's a good idea, something that hadn't occurred to me. This would
> eliminate the pumps and the airtank and the switches, and a lot more of the
> tubing. However, like I said earlier, I don't have enough pistons to do
> this. I really need two control pistons to flip the two 'working' pistons.
> There isn't enough air contained in one piston to fully flip two working
> pistons, especially under load.
Ah, but if you simply hinge the front, and control the back with a single
piston, that is driven by a single piston, you can get very fine control and
still have four pistons left over.
>
> I could, though, use my remaining pistons together to just move one side of
> the platform. I don't think I need to do any full tilts (fully up to fully
> down) at any point in the film, so I could rig it for just one half of the
> platform and switch the control pistons to the other set when I get to that
> point. I like that idea, I'll try it.
>
> > Fun project! Thanks for sharing!
>
> Thanks for looking at it! I appreciate the feedback.
You are welcome.
>
> ~Mike
Kevin
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Message has 1 Reply:
 | | Re: Pneumatic Camera Tilt Unit
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| (...) You really don't *need* both sides actuated, but it allows one to raise the platform as well. Not really necessary, I suppose. I presume you mean two pistons ganged end-to-end. I think this would work much better, but so far have not found any (...) (21 years ago, 6-Oct-03, to lugnet.animation, lugnet.build, lugnet.technic)
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